If you're looking for manga similar to 090: Eko to Issho., you might like these titles.
"Master, since I've become human, you can have me do anything you want... even erotic things are fine with me..."A cellphone turns into a beautiful girl!! To thank her master for always taking care of her, the cellphone becomes the beautiful "Keitai Merumeru" so she can repay him. She tells her master, Shiro, that she can grant him three wishes. What kind of wishes can she grant that she couldn't do as a cellphone!? It's the beginning of a strange new life for the naturally energetic girl Merumeru and her very confused master Shiro...!
Second-year high school student Antique AN returns to the town he previously lived in for the first time in several years. He transfers into Morisawa Academy, a school consisting entirely of personified font types, and reunites with his best friend Futago B101. At his new school, Antique AN meets a variety of interesting characters, including the friendly yet imposing homeroom teacher Seikaisho CB1, the serious class president Ryumin, the sporty Harucraft and the young twins Shin Maru Go and Happy N.
It's the year 2205 AD, stories of the old days are slowly being modified by unknown, evil forces. As a sage, you have the ability to bring life to inanimate objects. Your duty is to bring these blades to life, create an army, and defeat the enemies!
Techno lived in a bomb shelter for most of his life. He and his grandfather are amazingly smart. One day Techno sees a girl named Hitomi on his yard. He instantly falls in love. He names her Daisy, even though she keeps telling him that's not her name. After 3 months of practice on a robot he decides to start a relationship with her.
About Android school (all girl school?) The students are the personification of Gadget/Device brands which use Android OS. The School teacher is Google-Sensei. There also student (boys) from other school: Apple-Kun, RIM-Kun & Nokia-Kun.
Funko, Shigu, Eru and Ichiroku seem to be typical school girls on the surface, but they're actually powerful, dangerous guns that must be treated with care and respect! Together, they attend Seishou Academy, a special place where not only are all of the students guns, the teachers are as well. Alongside their always-in-harm's-way homeroom teacher and other classmates such as Jiisuri, Ichiyon and Faru, the girls will live a very eventful school life full of shootouts and special training.